@kotlinlang.org
Kotlin is a programming language that makes coding concise, cross-platform, and fun — https://kotlinlang.org/ Video tutorials http://kotl.in/video News http://kotl.in/news Community discussions http://kotl.in/slack
Golden Kodee for Online Presence honors those who generously share their knowledge online. If their content helped you level up, give them your vote!
https://kotl.in/6zi8k8
📢 Kotlin 2.3.20-RC3 is out!
Try it out: kotl.in/2-3-20-rc3
Who should receive a Golden Kodee?
Now’s your chance to show support for the community members who inspire, build, and help others. Vote for your favorites!
https://kotl.in/6zi8k8
Want to build AI agents with Kotlin? 🤖
This hands-on Koog workshop at KotlinConf’26 will guide you through the entire life cycle – from quick prototypes to production-ready systems.
🗓️ May 20 • 📍 Munich
⚠️ It's 75% booked – secure your spot now 👇
https://kotl.in/agents-workshop-xbs
Big changes are coming with the latest version of the Android Gradle plugin.
In this video, @zsmb.co walks through what’s changing, why it matters, and how to upgrade your Kotlin projects with confidence.
👀 youtu.be/m0Cq6J-V_RY?...
Want to build Kotlin Multiplatform apps with confidence?
Join our advanced KMP workshop and learn proven best practices directly from the JetBrains team.
🗓️ May 20 • 📍 Munich
⚠️ This workshop is 70% booked – save your spot 👇
https://kotl.in/kmp-workshop-xbs
📢 Kotlin 2.3.20-RC2 is here!
Try it out: kotl.in/2-3-20-rc2
Kotlin Heroes: Episode 14 starts today at 2:35 pm UTC 🚀
Join our algorithmic Kotlin contest, sharpen your skills, and compete for prizes – everyone who solves at least one problem has a chance to win a Kotlin Heroes T-shirt!
🦸 🦸♂️ 🦸♀️
See you there: https://codeforces.com/contests/2198,2199
Weekends are made for good, thoughtful reading, aren’t they?
If you’re looking for something interesting (and useful) to dive into today, we came across a great piece on how to build a self-hosted TTS that actually sounds natural 🎙️ https://sobolev.substack.com/p/how-to-build-self-hosted-tts-that
🆕 Build AI-powered apps with Kotlin and Spring AI.
Follow a hands-on tutorial series covering text and image generation, text-to-speech, embeddings, and RAG – all on a pure JVM stack.
Get started 👇 https://kotlinlang.org/lp/kotlin-spring-ai-tutorial/
200+ Kotlin videos. 20+ hours. From fundamentals to compiler internals.
This new course by Philipp Lackner covers every language feature and dives into generated bytecode to explain how Kotlin works under the hood.
Save 30% until March 2, 2026.
👉 Enroll now: https://kotl.in/auchl2
Master Kotlin coroutines with @sebi.io in a hands-on workshop at KotlinConf’26.
Build reliable, high-performance concurrent systems – the right way.
🗓️ May 20 • 📍 Munich
⚠️ Seats are limited. Save your spot now 👇👇👇
https://kotl.in/coroutines-workshop-xbs
Our official search for Kotlin Multiplatform libraries is built with Kotlin + Spring – and it’s now open source! 🚀
💡 Check out the code, learn how it works, and use it as a starting point for your own backend projects. The client part will follow soon.
https://github.com/JetBrains/klibs-io
Excited to welcome @lenareinhard.bsky.social to the KotlinConf’26 stage! 🚀
👉 kotlinconf.com 👈
Tried KMP for iOS or Android recently? We’d love to hear your impressions: the good, the confusing, and the surprising.
We’ll thank you with your choice of a:
📦 USD 100 Amazon Gift Card
💻 One-year JetBrains All Products Pack subscription
Take the survey to see if you qualify ▶️ kotl.in/7zd5ti
💜 Kodee's latest Kotlin Roundup covers KotlinConf'26 updates and the full conference schedule, recent Kotlin releases, ecosystem news, and real‑world stories from teams building at scale. Check it out to catch up on everything happening across the Kotlin world!
https://kotl.in/l56mja
🎉 Java to Kotlin conversion is now available in VS Code.
We’ve released the J2K Converter extension, enabling seamless conversion of individual `.java` files to Kotlin using the same proven engine as our IntelliJ-based IDEs.
Get it now 👇
https://kotl.in/pebpcu
📣 This is your last chance!
Nominations for the Golden Kodee Community Awards close on February 22. Don’t miss the opportunity to recognize someone inspiring – or even yourself.
Submit your nomination today: https://kotlinconf.com/awards/
📢 Take part in the Exposed user survey and help us improve how Exposed is used in real projects. Tell us which versions, databases, modules, and programming styles you rely on, and what works well or needs improvement.
👉 surveys.jetbrains.com/s3/757c90830...
Build real apps with Compose Multiplatform – not just demos.
Learn shared UI, Navigation 3, animations, theming, state, interop, and more in a hands-on workshop at KotlinConf’26.
🗓️ May 20 · 📍 Munich
⚠️ Seats are limited – grab yours now! 👇👇👇
https://kotl.in/cmp-workshop-xbs
Read the full story: From Native to Multiplatform: Our Journey with Kotlin Multiplatform at Prezzee: kotl.in/vn3r8x
Prezzee reflects on the people side of KMP adoption:
“The real transformation happened with our people. We evolved from platform-specific specialists to T-shaped engineers: Deep expertise in a specific area... Broader technical knowledge and crucial soft skills." 🧵👇
📣 The full #KotlinConf26 schedule is now live on our website!
Explore the talks, workshops, and speakers, and start planning your agenda today.
Check it out: https://kotl.in/conf26-schedu
Jeffrey van Gogh, Director of Engineering at Google, will also be joining the KotlinConf'26 speaker lineup.
In his talk, he will explore why using Reflection – a common feature in many higher-level languages and VMs – can be problematic.
kotlinconf.com/#speakers
Bringing decades of experience from the Spring ecosystem to KotlinConf’26 is @starbuxman.joshlong.com, the first Spring Developer Advocate. 🧵⬇️
💜 Know someone who’s pushing creative boundaries with Kotlin, growing the community, teaching others, or using Kotlin for social good? Maybe that’s you?
Nominate them (or yourself) for the Golden Kodee Community Awards! Submissions are open until February 22.
👉 https://kotl.in/golden-kodee-bl
Why did the team at Amazon Fashion adopt Kotlin to power the AI-based size recommendation system that serves hundreds of millions of users?
🎥 Watch the testimonial to get the full story: https://www.youtube.com/watch?v=rvyUgcxfang
Want to tap into Spring Boot's full concurrency power with Kotlin? 🚀
Join Urs Peter's hands‑on workshop at KotlinConf and learn how to make your apps faster and more scalable than ever.
🗓️ May 20 • 📍 Munich
Seats are limited – sign up 👇👇👇
https://kotl.in/spring-boot-workshop-xbs
🎤 Creator and maintainer of widely used Android and Kotlin libraries, Jake Wharton, is coming to KotlinConf'26!
His talk focuses on how command-line tools interface with modern terminals, and on exploring advanced terminal capabilities using Kotlin.
